Deflection circuit for a picture tube

Details Deflection circuit for a picture tube Deflection circuit for a picture tube

1978-09-06

1980-07-29

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315397, H01J 2970, H01J 2976

Patent

active

042152950

ABSTRACT:
A sawtooth wave generated in a sawtooth wave generator circuit of a vertical deflection circuit assumes a predetermined maximum voltage at the start of a vertical scan and a minimum voltage which changes depending on a vertical cycle period at the end of the vertical scan. A pulse generator generates a sampling pulse at the end of the vertical scan so that the sawtooth wave voltage at the end of the vertical scan is sampled by the sampling pulse. The sampled sawtooth wave is held until a next sampling pulse is generated so that a D.C. voltage which changes in accordance with the vertical cycle period is produced. The sawtooth wave voltage is level-shifted by a level shifting circuit and thereafter amplified before it is supplied to a vertical deflection coil. The amount of shift by the level shifting circuit is controlled by the D.C. voltage so that the sawtooth wave having a stabilized D.C. component is amplified. Accordingly, a vertical deflection circuit free from D.C. component variation can be derived and the swing of image can be suppressed.

REFERENCES:
patent: 3774068 (1973-11-01), Yasumatsuya

Affiliated with

Also associated with

Rating

Deflection circuit for a picture tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Deflection circuit for a picture tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deflection circuit for a picture tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-906418